Fluid-jet blower.



T. GRUENWALD. FLUID JET BLOWER. APPLICATION FILED NOV.25,1913.

Patented May 19, 1914.

TGruebwa/d MI /mama TEODOBO GRUENWALD, OF GENOA, ITALY.

FLUID-J ET BLOWER.

Specification of Letters Patent.

Patented May 19, 1914:.

Application filed November 25, 1913. Serial No. 802,933.

To all whom it may concern Be it known that I, Tnooono GRUENWALD, subject of the Emperor of Austria-Hungary, residing at Genoa, Italy, have invented cer tain new and useful Improvements in Fluid- Jet Blowers, of which the following is a specification.

This invention relates to improvements on the invention specified in the earlier U. S. Patent 1,050,126. The said specification describes an apparatus in which an aperture is provided in the wall of the smoke box casing of flue boilers to allow of the insertion of the nozzle tube of the cleaning apparatus into the smoke box at closed doors, the arrangement being such that the cleaning pipe is able to be moved into the various posi tions in the said aperture during the cleaning process.

The present invention has for its object to provide an extremely simple construction which will enable the inconvenient aperture which is generally very difiicult and often impossible to provide to be dispensed with by providing a ledge like member having slots which serve as guides for the nozzle tube during the cleaning operation near and immediately below the lower edge of the existing smoke box door, in the manner that by slightly opening the smoke box door or a partition of it, the nozzle tube guided in the slots of the mentioned ledge-like member may be easily introduced into the smoke box and thus effect the cleaning operation.

An apparatus constructed according to the present invention is shown in two examples in the accompanying drawings, in which Figure 1 is a partial longitudinal sectional View of the flue boiler with the nozzle tube fed by a mixture of steam and hot gases from the outside applied thereto; Fig. 2 is a partial longitudinal sectional view of a flue boiler with the nozzle tube fed by steam only from the outside applied thereto; Fig. 3 and Fig. i are constructive details.

In these figures 1 designates a flue boiler with a plurality of flues 2 and a smoke box chamber 3.

t is the collecting head fixed to the smoke box wall for the cleaning fluid. The head 1 receives steam through the steam pipe 5 from the boiler.

6 is a flexible metal pipe provided at its free end with a rigid nozzle tube 4t, the

nozzle of which is brought in front of the several tubes in the cleaning operation.

For the purpose of providing a slot for the introduction of the nozzle tube into the smoke box, the lower part of the rear and usually steeply inclined wall of the smoke box is formed as a flap 7 turning on hinges 8 in such a manner that by turning this flap into a vertical position a slot will be formed through which the nozzle tube can be introduced and moved about during the cleaning operation, so that the boiler can be cleaned even when the doors are closed. The flap 7 is preferably made with side walls 9 projecting toward the interior of the smoke box, which walls constitute lateral closing means during the cleaning operation when the flap 7 is open.

0n the outside of the projecting bottom smoke box wall there is fixed a ledge like member 10 provided with slots 11. These slots are arranged to correspond with the vertical rows of the boiler tubes and the nozzle tube 4: which is of rectangular crosssection is guided between the sides of said. slots during the cleaning operation. Gross cuts 12 are arranged in the nozzle tube to correspond with the distances of the horizontal rows of the lines which cuts during the cleaning operation will be inserted in corresponding edges provided on the ledge like member so as to establish from the outside the desired vertical position of the nozzle tube for the cleaning operation.

Fig. 2, represents the same constructive means forthe introduction of the nozzle tube from the outside through the nozzle into the smokebox, according to the example of Fig. 2 the nozzle tube is fed by steam only which steam draws in through openings 13 in the conical head 14: hot combustion gases directly from the smoke box chamber.

I claim V 1. A boiler provided with fiues disposed in vertical rows and having a casing extending about the open ends of the lines to form a smoke box, a hinged flap forming a door on said smoke box, side walls to said flap, a nozzle through which a cleaning fluid is ejected into said fines, a tube carrying said nozzle, a ledge-like member arranged adjaprovided with means for positioning the,

tube horizontally in alinement With the Vertical rows of lines, and means for positioning the tube vertically in alinement with the horizontal roWs of flue s.

2. A boiler provided with fiues disposed in vertical rows and having a casing extending about the open ends of the fines to form a smoke box, a hinged flap forming a dooron said smoke box, side Walls to said flap, a nozzle through which a cleaning fluid is ejected into said flues, a tube carrying said nozzle, a ledge-like member arranged adjacent the lower edge of said hinged flap, slots in copies of this patent may be obtained for five cents each, b y addressing the Commissioner of Patents,

Washington, D. C. 

